Electric-fan blade



'Jan. 5 ,1926.

A. GENERICH 51.301316 FAN BLADE.

156mm I Filed Jan. 7, 1925 anomlioz Generic h Patented Jan. 5, 1925.

UNITED STATES PATENT OFFICE.

ARNOLD GENERICH, OF NEW YORK, N. Y., ASSIGNOR TO ABRAHAM IBEBEL, OF NEWi YORK, N. Y.

.ELEGTRIC-FAN BLADE.

Application filed January 7, 1925. Serial No. 954.

To. all whom it may concern:

Be it known that I, AnNoLn GnNnnIoH, a citizen of Germany, residing atNew York, in the county of New York and State of New York, have inventedcertain new and useful Improvements in Electric-Fan- Blades, of whichthe following is a specification.

This invention relates to improvements in fans and particularly tosuchas are power driven to produce a current of air.

One of the objects of the invention is to provide a fan having inaddition to the usual radially disposed vanes, a series of longitudinalblades arranged-tangentially to the radial vanes, whereby the fan isrendered more effective; Another purpose is to produce a fan havmg aseries of radial vanes and another series of blades disposed in conicalformation,

. their base ends being beyond the tipsfof the raidal vanes andconverging towards their opposite lower ends, whereby an air current isdiverted angularly downward in an effective manner.

These and other like objects are attained by the novel construction,combination and arrangement of partshereinafter described and shown inthe accompanying drawing, forming a material and in which Figure 1 is aside elevational view of a fan made in accordance with the invention.

Figure 2 is aplan and transverse sectional view looking from line 2-2 ofFigure 1.

In the drawing, Figures 1 and 2 show a ceiling supportedfan in which thenumeral 5 designates the ceiling and 6 a bracket at tached to the lowerside, a spindle 7 passing through the bracket andceiling as shown.

Secured to the spindle 7v is a drive pulley 8 actuated by a belt 9 andattached to the lower extending end of the spindle is a sleeve 10carrying the fan elements.

On the upper partof the sleeve 10 is fixed a hub 11 from which extendpairs of oppositely disposed blades 12, the same being of the usualpaddle-shaped type and twisted helically in such direction as to forcethe air downward or away from the ceiling. Attached to the ends of theblades 12 is a ring13 having secured on its periphery the upper ends ofa plurality of vanes 14 which converge at their lower ends and are atpart of this disclosure,.

than the first name tached to a ring 15 having arms 16 radiating fromacommon center in which the lower end of the sleeve 10 is fixed.

The vanes 14 are composed essentially of flat plates, arrangedtangentially of the ring 13, reduced in width as they approach the ring15, and are curved to present outer concave surfaces, the point ofattachment being at their advance edges only. The efiect of theassociated blades fans is to deliver a current of air over a widelydisposed area and at an angle downward, the current being dilfusedrather than concentrated.

()bviously minor changes may well be made 7 in the structure presentedwithout departing from the scope of the appended claims.

Having thusdescribed my invention, what and y I claim as new and desireto secure by 7 Letters Patent, is

1. A power driven rotary fan having a plurality of radial paddle shapedblades, :1 ring or rings at the extremities of the blades, a pluralityof arcuately curved longitudinal vanes fixed to the ring or rings, saidvanes being attached at their curved advancing edges and disposedtangentially and co r vergingly at their ends, and a pendantly supportedshaft connected to their converging ends.

2. A fan having a vertical shaft,'one or more sets of radial paddleshaped blades rotatably mounted thereon, rings connecting theextremities of each set of blades, convexly curved longitudinal vanessecured tangentially to the rings, and connections between said vanes atpoints remote from the radial blades. A

3. A fan comprising a pendantly supported vertical spindle, a drivingmeans therefor, a sleeve secured to said spindle, a plurality of radialpaddle-shaped fan blades fixed on said sleeve, a ring fixed at the endsof said blades, a ring having inreaching arms fixed at the extremity ofsaid sleeve, said last named ring being of lesser diameter tangentialvanes secured at their advance edges to said rings, said vanes beingcurved outwardly. towards their free edges.

In witness whereof I have afiixed my nature.

ARNOLD GENERICH. 1

ring, and a plurality of

